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/******************************************************************************
* include/asm-x86/grant_table.h
*
* Copyright (c) 2004-2005 K A Fraser
*/
#ifndef __ASM_GRANT_TABLE_H__
#define __ASM_GRANT_TABLE_H__
#define ORDER_GRANT_FRAMES 2
/*
* Caller must own caller's BIGLOCK, is responsible for flushing the TLB, and
* must hold a reference to the page.
*/
int create_grant_host_mapping(
unsigned long addr, unsigned long frame, unsigned int flags);
int destroy_grant_host_mapping(
unsigned long addr, unsigned long frame, unsigned int flags);
#define gnttab_create_shared_page(d, t, i) \
do { \
share_xen_page_with_guest( \
virt_to_page((char *)(t)->shared + ((i) * PAGE_SIZE)), \
(d), XENSHARE_writable); \
} while ( 0 )
#define gnttab_shared_mfn(d, t, i) \
((virt_to_maddr((t)->shared) >> PAGE_SHIFT) + (i))
#define gnttab_shared_gmfn(d, t, i) \
(mfn_to_gmfn(d, gnttab_shared_mfn(d, t, i)))
#define gnttab_mark_dirty(d, f) mark_dirty((d), (f))
static inline void gnttab_clear_flag(unsigned long nr, uint16_t *addr)
{
clear_bit(nr, addr);
}
#endif /* __ASM_GRANT_TABLE_H__ */
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